TK's Emisar D4 review

[djozz]

ToyKeeper wrote: It appears to be fixed in the D4S. I checked a moment ago, and my DMM measured zero on a prototype with the battery inserted backward. The same DMM measures about 4A to 6A on a D4 with the battery in backward.

I’m glad to hear that

[ToyKeeper]

I can at least confirm that the D4S is throwier than the D4, and it has a nice beam with only minimal artifacts. It has a round hotspot, a reflector-like spill area, and then some mild extra junk outside the edge of the spill.

It also has cyan-colored aux LEDs under the optic, 16 of them, which work like tritium vials.

It’s a D4, but sized for a 26650 cell, throwier, and with some other misc improvements.

…

Edit: Oh, um, my prototype uses XP-L HI 3A. I’m not sure how the beam looks with other emitters.

[djozz]

@ToyKeeper

It also has cyan-colored aux LEDs under the optic, 16 of them, which work like tritium vials.

I like that type of bling :+1:

[ToyKeeper]

@djozz

@ToyKeeper

It also has cyan-colored aux LEDs under the optic, 16 of them, which work like tritium vials.

I like that type of bling :+1:

I’m not a huge fan of trits under optics, but I like this. It can be enabled when it’s useful and turned off the rest of the time.

[iamlucky13]

@ToyKeeper

@iamlucky13

I wonder if the additional height also fits in any changes to the driver.

Given more PCB area, it seems pretty reasonable that additional 7135’s could be added, although that doesn’t add height.

First, I just want to note that iamlucky13 currently has exactly 13 posts.

About the driver though, it does have some changes compared to the D4/D1/D1S. I don’t have a production model yet though, so I’m not sure what all the changes are.

It seems one change is fixing the reverse polarity protection.

Neat. I’ll have to never post again to preserve that match.

Oh wait. D’oh!

It will be interesting to hear about the changes once those can be shared.

[hIKARInoob]

Same problem as with the Haikelite SC26; now what 26650 cell should I get…?

[severide]

@ToyKeeper

I can at least confirm that the D4S is throwier than the D4, and it has a nice beam with only minimal artifacts. It has a round hotspot, a reflector-like spill area, and then some mild extra junk outside the edge of the spill.

It also has cyan-colored aux LEDs under the optic, 16 of them, which work like tritium vials.

It’s a D4, but sized for a 26650 cell, throwier, and with some other misc improvements.

…

Edit: Oh, um, my prototype uses XP-L HI 3A. I’m not sure how the beam looks with other emitters.

noooice! looking forward to this. thanks for sharing

[deleted-200707]

just ordered a Shockli 26650 fm Mtn Electronics for my Rofis MR70, almost ordered two anticipating the D4s.
Butt the D4 was picky about its battery fit, so I’ll wait a bit.

[DB_Custom (Dale)]

I have Shockli’s, black wrapped and blue wrapped LiitoKala’s and the black wrapped LiitoKala’s seem to perform best if absolutes matter.

The Black LiitoKala’s best Efests of dark and light purple, red too. As well as Gold King Kongs and orange MNKE’s and green Moli’s, KeepPower 5200’s and Basen’s…. I, uh, have a lot of cells. The discontinued orange Powerizer LiNiMnCo’s were probably the best, a short cell with high delivery. Been out of population for a while now.

[ToyKeeper]

@chinooker

just ordered a Shockli 26650 fm Mtn Electronics for my Rofis MR70, almost ordered two anticipating the D4s.
Butt the D4 was picky about its battery fit, so I’ll wait a bit.

I actually don’t know for sure if those will fit. I only have one 26650 cell and it didn’t fit in my prototype. But Hank tells me the battery tube has been changed to fit bigger cells. And not only is the Shockli the highest-capacity cell in RMM’s store, it’s also one of the smaller 26650 cells. So I think it’ll probably be okay.

Meanwhile, I’ve been testing with a 18650 wrapped in packing foam.

[Eraursls1984]

@hIKARInoob

Well if the D4 is transposed to the D4S, then maybe Hank will turn the D4 into a Meteor M43 like light; basically four D4 lights into one M43 form factor with 4x4 emitters.

Soooo… A M44? Probably the only thing holding me back from the M43 is the firmware (and it’s not easily changed?). An M44 with D4 firmware, and with a new flash friendly driver, I wouldn’t hesitate buying another light I have no use for, lol.

I wonder if the same $40 price point will stick for the D4s?

Next up, the D1s! Well, not the D1s, but the D1s. Then the D1ss?

[DrDevil]

Received the D4 in white this day

It´s not really white, more a very light silver grey, depends a bit on the lighting conditions
and it has the grainy surface

The clip differs from the earlier version

and it fits so tight I can not move it after clipped on

Black and white :sunglasses:

[doubleone44]

@djozz

@djozz

Has anyone before in these 4700 posts actually checked this?

And where in the driver is this power (24W!) burnt off? (the light is fine after 10 seconds reverse battery contact).

I guess that I’m the only one that is concerned about a 6A current and 24W of heat produced in the head when the battery is reversed. Say I put in a 30Q in a D4 the wrong way, close up the tail and do not check if it works and put it away. The sustainable power for this size light is about 8W so it gets hot fast. Perhaps some part on the driver will go at some point, will it break the circuitry or will it create a dead short?

I think that it would be a good idea for Hank to address this problem.

Probably FET + Battery. I shorted a D1S driver once on accident by shorting the LED leads, and the FET burned through (very smelly, would not recommend).

[will34]

Is there a possibility that Hank considers producing a 21700 tube?

I’ve been EDCing my D4 219C lately and the only thing that bothers me is the heat at max level, with LH351D and larger body it should perform pretty amazing. We should persuade Hank to make it into an emitter option.

[MascaratumB]

@ToyKeeper

[…]

@MascaratumB

Time to open a thread about the new one?

I’m hoping to do a review soon, if a D4S shows up in the mail. I’m going on a trip soon though, so I’m not sure if there will be time before I go. […]

That is completely fine :+1: I hope it does appear in the mail !
Guess I will have to think of buying my first 26650s :innocent:

[TheShadowGuy]

@will34

I’ve been EDCing my D4 219C lately and the only thing that bothers me is the heat at max level, with LH351D and larger body it should perform pretty amazing. We should persuade Hank to make it into an emitter option.

3500k 90CRI LH351D (or even in the more traditional 4000k-5000k range) would probably make me buy one, and I don’t even own any 26650s.

[ToyKeeper]

Okay, the review unit is here.

I’ll have to thank Hank for sending a black-colored light for photography purposes. Those are always the easiest to get good pictures of.

Also, it’s cool white. So I’ll want to swap the emitters. And it has no O-rings, so I’ll probably transfer the rings from the dev prototype. And no label on the tailcap.

So it’s not quite a production unit, but it’s pretty close.

[bmengineer]

It’s not a production unit, just the production aluminium.

[ToyKeeper]

Okay, the D4S review is up:

Emisar D4S review

Well, the cat is out of the bag. Emisar has a new light called the D4S. It’s like an Emisar D4, but sized for a 26650 cell, throwier, and with some other misc improvements. It also has cyan-colored aux LEDs under the optic, 16 of them, which work a bit like tritium vials. [image] For anyone who is not familiar with the Emisar D4, two things: I did a thorough review you might want to read for context: TK's Emisar D4 review It is a “hot rod” in the hottest sense of the term, and can start fir…

[Newlumen]

Nice… look forward to get one .